mod_statusbar/draw.c

   1 /*
   2  * ion/mod_statusbar/draw.c
   3  *
   4  * Copyright (c) Tuomo Valkonen 1999-2008.
   5  *
   6  * See the included file LICENSE for details.
   7  */
   8
   9 #include <string.h>
  10
  11 #include <ioncore/common.h>
  12 #include <ioncore/mplex.h>
  13 #include "statusbar.h"
  14 #include "draw.h"
  15
  16
  17 static void calc_elems_x(WRectangle *g, WSBElem *elems, int nelems)
  18 {
  19     int x=g->x;
  20
  21     while(nelems>0){
  22         elems->x=x;
  23         if(elems->type==WSBELEM_STRETCH)
  24             x+=elems->text_w+elems->stretch;
  25         else
  26             x+=elems->text_w;
  27
  28         nelems--;
  29         elems++;
  30     }
  31 }
  32
  33
  34 static void calc_elems_x_ra(WRectangle *g, WSBElem *elems, int nelems)
  35 {
  36     int x=g->x+g->w;
  37
  38     elems+=nelems-1;
  39
  40     while(nelems>0){
  41         if(elems->type==WSBELEM_STRETCH)
  42             x-=elems->text_w+elems->stretch;
  43         else
  44             x-=elems->text_w;
  45         elems->x=x;
  46
  47         elems--;
  48         nelems--;
  49     }
  50 }
  51
  52
  53 void statusbar_calculate_xs(WStatusBar *sb)
  54 {
  55     WRectangle g;
  56     GrBorderWidths bdw;
  57     WMPlex *mgr=NULL;
  58     bool right_align=FALSE;
  59     int minx, maxx;
  60     int nleft=0, nright=0;
  61
  62     if(sb->brush==NULL || sb->elems==NULL)
  63         return;
  64
  65     grbrush_get_border_widths(sb->brush, &bdw);
  66
  67     g.x=0;
  68     g.y=0;
  69     g.w=REGION_GEOM(sb).w;
  70     g.h=REGION_GEOM(sb).h;
  71
  72     mgr=OBJ_CAST(REGION_PARENT(sb), WMPlex);
  73     if(mgr!=NULL){
  74         WRegion *std=NULL;
  75         WMPlexSTDispInfo din;
  76         din.pos=MPLEX_STDISP_TL;
  77         mplex_get_stdisp(mgr, &std, &din);
  78         if(std==(WRegion*)sb)
  79             right_align=(din.pos==MPLEX_STDISP_TR || din.pos==MPLEX_STDISP_BR);
  80     }
  81
  82     g.x+=bdw.left;
  83     g.w-=bdw.left+bdw.right;
  84     g.y+=bdw.top;
  85     g.h-=bdw.top+bdw.bottom;
  86
  87     if(sb->filleridx>=0){
  88         nleft=sb->filleridx;
  89         nright=sb->nelems-(sb->filleridx+1);
  90     }else if(!right_align){
  91         nleft=sb->nelems;
  92         nright=0;
  93     }else{
  94         nleft=0;
  95         nright=sb->nelems;
  96     }
  97
  98     if(nleft>0)
  99         calc_elems_x(&g, sb->elems, nleft);
 100
 101     if(nright>0)
 102         calc_elems_x_ra(&g, sb->elems+sb->nelems-nright, nright);
 103 }
 104
 105
 106
 107 static void draw_elems(GrBrush *brush, WRectangle *g, int ty,
 108                        WSBElem *elems, int nelems, bool needfill,
 109                        bool complete)
 110 {
 111     int prevx=g->x;
 112     int maxx=g->x+g->w;
 113
 114     while(nelems>0){
 115         if(prevx<elems->x){
 116             g->x=prevx;
 117             g->w=elems->x-prevx;
 118             grbrush_clear_area(brush, g);
 119         }
 120
 121         if(elems->type==WSBELEM_TEXT || elems->type==WSBELEM_METER){
 122             const char *s=(elems->text!=NULL
 123                            ? elems->text
 124                            : STATUSBAR_NX_STR);
 125
 126             grbrush_set_attr(brush, elems->attr);
 127             grbrush_set_attr(brush, elems->meter);
 128
 129             grbrush_draw_string(brush, elems->x, ty, s, strlen(s), needfill);
 130
 131             grbrush_unset_attr(brush, elems->meter);
 132             grbrush_unset_attr(brush, elems->attr);
 133
 134             prevx=elems->x+elems->text_w;
 135         }
 136         elems++;
 137         nelems--;
 138     }
 139
 140     if(prevx<maxx){
 141         g->x=prevx;
 142         g->w=maxx-prevx;
 143         grbrush_clear_area(brush, g);
 144     }
 145 }
 146
 147
 148 void statusbar_draw(WStatusBar *sb, bool complete)
 149 {
 150     WRectangle g;
 151     GrBorderWidths bdw;
 152     GrFontExtents fnte;
 153     Window win=sb->wwin.win;
 154     int ty;
 155
 156     if(sb->brush==NULL)
 157         return;
 158
 159     grbrush_get_border_widths(sb->brush, &bdw);
 160     grbrush_get_font_extents(sb->brush, &fnte);
 161
 162     g.x=0;
 163     g.y=0;
 164     g.w=REGION_GEOM(sb).w;
 165     g.h=REGION_GEOM(sb).h;
 166
 167     grbrush_begin(sb->brush, &g, (complete ? 0 : GRBRUSH_NO_CLEAR_OK));
 168
 169     grbrush_draw_border(sb->brush, &g);
 170
 171     if(sb->elems==NULL)
 172         return;
 173
 174     g.x+=bdw.left;
 175     g.w-=bdw.left+bdw.right;
 176     g.y+=bdw.top;
 177     g.h-=bdw.top+bdw.bottom;
 178
 179     ty=(g.y+fnte.baseline+(g.h-fnte.max_height)/2);
 180
 181     draw_elems(sb->brush, &g, ty, sb->elems, sb->nelems, TRUE, complete);
 182
 183     grbrush_end(sb->brush);
 184 }
 185
 186